71017003772085 has 16 divisors (see below), whose sum is σ = 129859664040576. Its totient is φ = 32464916010048.

The previous prime is 71017003772081. The next prime is 71017003772167. The reversal of 71017003772085 is 58027730071017.

It is not a de Polignac number, because 71017003772085 - 2² = 71017003772081 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71017003772081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 338176208334 + ... + 338176208543.

It is an arithmetic number, because the mean of its divisors is an integer number (8116229002536).

Almost surely, 2^{71017003772085} is an apocalyptic number.

It is an amenable number.

71017003772085 is a deficient number, since it is larger than the sum of its proper divisors (58842660268491).

71017003772085 is a wasteful number, since it uses less digits than its factorization.

71017003772085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676352416892.

The product of its (nonzero) digits is 576240, while the sum is 48.

The spelling of 71017003772085 in words is "seventy-one trillion, seventeen billion, three million, seven hundred seventy-two thousand, eighty-five".